Start with the Universal Dock, which looks almost identical to the version introduced in 2007. Made from glossy white plastic with a “well” in the top center that can fit any Dock Connector-equipped iPod, the Dock has received only the most modest external changes: the “iPod” name is gone from its gray rubber bottom, and a new A1371 part number differentiates it from the A1256 prior model. Since the well hasn’t been redesigned,…